EP1470356B1 - Assemblage par compression - Google Patents

Assemblage par compression Download PDF

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Publication number
EP1470356B1
EP1470356B1 EP03700282A EP03700282A EP1470356B1 EP 1470356 B1 EP1470356 B1 EP 1470356B1 EP 03700282 A EP03700282 A EP 03700282A EP 03700282 A EP03700282 A EP 03700282A EP 1470356 B1 EP1470356 B1 EP 1470356B1
Authority
EP
European Patent Office
Prior art keywords
fitting
pipe end
press
fit connection
sealing ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP03700282A
Other languages
German (de)
English (en)
Other versions
EP1470356A1 (fr
Inventor
Jürg Scholz
Hansruedi Wili
Michael Kirch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geberit Technik AG
Original Assignee
Geberit Technik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27626677&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1470356(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Geberit Technik AG filed Critical Geberit Technik AG
Publication of EP1470356A1 publication Critical patent/EP1470356A1/fr
Application granted granted Critical
Publication of EP1470356B1 publication Critical patent/EP1470356B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • F16L13/143—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element placed around the male part before crimping or rolling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/148—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling specially designed to ensure an intended leakage until correct deformation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
    • F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
    • F16L33/2075—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by quick acting

Definitions

  • the invention relates to a press connection according to the preamble of claim 1.
  • DE 298 13 935 U discloses a non-detachable press connection between a sleeve and a metal pipe end, wherein the sealing ring is inserted into a groove of the sleeve. After insertion of the pipe end to be connected in the sleeve, a leak is present, which is closed after the compression of the sleeve. This leak is intended to ensure that an inadvertently unpressed socket is detected as a result of leakage at the leak.
  • the leak is achieved with a sealing ring, which has a special non-circular contour. Such sealing rings must be specially manufactured and are therefore relatively expensive.
  • US Pat. No. 5,378,023 or EP 0 513 292 B1 discloses a press connection between a double fitting and pipe ends pushed onto it. A leak is not provided in this connection. If a pipe end has not been pressed accidentally, the fitting may still be tight under normal water pressure, so that a missing pressing is initially not recognized. If the water pressure increases, the fitting will leak and a high building damage may occur. A leak can occur in this connection even if a pipe end is not carefully deburred and thereby the sealing ring or the sealing rings are injured. Again, there is a risk that such a leak will occur later after pressure fluctuations in the line.
  • the generic DE-A-101 37 078 discloses a press fitting having on its outer side two sealing rings has, which are each inserted in a circumferential groove. So that the sealing rings are not damaged when pushing a pipe end, the sealing rings are each completely disposed within the corresponding groove.
  • a proposed compression sleeve has two deformation approaches, which are pressed in each case in an annular groove during compression of the pipe end to seal the tube.
  • US-A-6,145,892 discloses a press connection and a press tool.
  • the pressing tool has two contours with which a pushed onto a fitting pipe end is pressed next to a sealing ring.
  • the invention has for its object to provide a press connection of the type mentioned, which provides a higher level of security, but is still easy and inexpensive to manufacture and assemble.
  • the object is achieved in a generic compression connection according to claim 1.
  • the groove on the outside of the fitting has a non-round groove bottom in the cross-section of the fitting. This has the consequence that a slightly strained inserted into the groove sealing ring lies with its circumference below the outside of the fitting and thereby results in not yet compressed pipe end leakage.
  • the sealing ring can be designed as usual, ie it can have a circular cross section. Due to the mentioned difference in the diameters, the sealing ring is not touched by this at least partially when pushing the pipe end to be joined.
  • a deburred end face can therefore not injure the sealing ring, which is true when the sealing ring has a smaller outer diameter over its entire circumference. If the pipe end is accidentally not compressed, there is a leak between the outside of the sealing ring and the inside of the non-compressed pipe end. A non-compressed pipe end is thus recognized immediately even at low water pressure. Structural damage due to a non-deburred pipe end or lack of compression can thus be effectively avoided. Higher costs than usual press connections do not arise. Another advantage of the invention is that comparatively high tolerances between pipe end and fitting without compromising the tightness and strength of the connection are possible.
  • the invention also relates to a particularly suitable pressing tool and a fitting according to claim 1 for producing the press connection according to claim 1.
  • the two pressing jaws of this pressing tool each have a first contour for guiding the pressing jaws on a collar of the fitting and a second contour for Cold forming of the pipe end in the region of the sealing ring and a third contour for cold deformation of the pipe end at the free end of the fitting.
  • the press connection has a fitting 2, of which only one half is shown.
  • the half not shown can also be designed for a press connection. But it can also, for example, have a thread or be part of a fitting.
  • the fitting 2 consists for example of plastic or metal and has a collar 2f and a shoulder 2e as a stop for a cutting surface 1e of an end 1a to be connected to a pipe. Between the collar 2b and the cutting surface 2e a circumferential groove 2g is arranged, in which a compression sleeve 5 engages with an inwardly directed edge 5a. The edge 5a is preferably snapped into the groove 2g.
  • the compression sleeve 5 may be preassembled on the fitting 2.
  • a circumferential groove 2a is incorporated, in which a sealing ring 3 is inserted with a circular cross-section.
  • the outer diameter d of this sealing ring 3 is smaller than the inner diameter D of the tube 1.
  • This outer diameter d is also smaller than the outer diameter E of the surface 2h.
  • the groove 2a is bounded by two ribs 2b, to each of which a recess 2c connects.
  • the groove 2a is thus located between two recesses 2c and two immediately adjoining ribs 2b. As can be seen, these ribs 2 b are designed so that the sealing ring 3 projects radially beyond them.
  • the tube 1 is made of a cold-workable material.
  • the tube 1 is a composite tube with a middle layer of aluminum. Such tubes 1 are known per se.
  • the pipe end 1a is pushed onto the fitting 2 until the end face 1e bears against the shoulder 2e.
  • the pipe end 1a is centered on the fitting 2.
  • the compression sleeve 5 is preferably preassembled as mentioned. The pipe end 1a is thus inserted into the compression sleeve 5. If the pipe end 1 is centered on the fitting 2, the compression sleeve 5 and the pipe end 1a are plastically deformed.
  • the pressing jaws of the pressing tool 4 are each guided with a contour 4a on the collar 2f.
  • Important contours 4c press the tube end 1a and the compression sleeve 5 in the region of the sealing ring 3.
  • a central circumferential region 1b 'in this case elastically deforms the sealing ring 3.
  • the deformation of the sealing ring 3 is limited by the adjacent ribs 2d. This avoids that the sealing ring 3 is plastically deformed beyond the elastic range.
  • a plastic deformation of a sealing ring 3 is unfavorable and affects the tightness.
  • the compression sleeve 5 improves the fixation of the pipe end 1a on the fitting 2. Basically, however, a connection without such a compression sleeve 5 is conceivable. Further contours 4b press the compression sleeve 5 and the tube end 1 in the region of the recess 2d. The compressed area 1d 'engages in this recess 2d and increases the strength of the connection.
  • a fitting 20 is provided, in which a groove 21 is incorporated.
  • a sealing ring 22 is inserted, which also has a round cross-section.
  • the tube 1 shown in Figure 2 is as shown in Figure 1, pushed onto the fitting 20, but not yet pressed here.
  • the groove 21 has a groove bottom 21a, which is non-circular in cross section according to FIG. In the figure 2, the groove bottom 21a in the range of the angle a, which is approximately 90 °, a flattened region A. Outside this area A, the groove bottom 21a may have a circular cross-section.
  • the flattening of the groove bottom 21a in the area A has the consequence that the sealing ring 22 inserted in the groove 21 is slightly tensioned according to FIG. 4 with its circumference below the outside 23 and thus in this area A with the pipe 1 slid but not yet pressed Leakage is present.
  • the leakage 24 is a passage between the sealing ring 22 and the inner side 25 of the tube 1. If the tube 1 is not compressed, occurs during commissioning of the line through the leak 24 water, so that it is already apparent during commissioning that the tube 1 was not pressed and there is no tight connection. The tube 1 can then be compressed and thus the leakage 24 can be canceled.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Joints With Sleeves (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Claims (9)

  1. Assemblage par compression entre un raccord (2) et une extrémité de tube (1a) matricée à froid et poussée sur le raccord, comprenant une bague d'étanchéité (3, 22), qui est introduite dans une rainure (21) du côté extérieur (2h) du raccord (2) et qui est déformée élastiquement par l'extrémité de tube (1a), le diamètre extérieur (d) de la bague d'étanchéité non déformée (3) étant au moins en partie plus petit que le diamètre intérieur (D) de l'extrémité de tube non déformée (1a), caractérisé en ce que ladite rainure (21) présente un fond de rainure (21a) non rond dans la section transversale du raccord (2).
  2. Assemblage par compression selon la revendication 1, caractérisé en ce que le raccord (2) présente une surface (2h) de diamètre extérieur (E), qui est supérieur au diamètre extérieur (d) de la bague d'étanchéité non déformée (3) en vue du centrage de l'extrémité de tube (1a).
  3. Assemblage par compression selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'extrémité de tube (1a) est déformée radialement vers l'intérieur dans la région de la bague d'étanchéité (3) et la bague d'étanchéité (3) est déformée élastiquement et hermétiquement par cette déformation.
  4. Assemblage par compression selon l'une quelconque des revendications 1 à 3, caractérisé en ce que, vu dans la direction axiale du raccord (2) avant et après la rainure (2a), est disposé un renfoncement annulaire (2c) dans lequel est pressée une région (1c') matricée à froid de l'extrémité de tube (1a').
  5. Assemblage par compression selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'extrémité de tube (1a') présente dans la région de l'extrémité libre du raccord (2) une région supplémentaire (1d') matricée à froid.
  6. Assemblage par compression selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'extrémité de tube (1a') est fixée en outre par une gaine de compression (5) matricée à froid.
  7. Assemblage par compression selon la revendication 6, caractérisé en ce que la gaine de compression (5) est fixée sur un épaulement (2f) du raccord (2), en particulier par encliquetage.
  8. Assemblage par compression selon la revendication 1, caractérisé en ce que le fond de rainure (21a) présente une région aplatie (A).
  9. Outil de compression et raccord selon la revendication 1, pour la fabrication d'un assemblage par compression selon la revendication 1, comprenant deux mâchoires de compression qui doivent être appliquée contre l'extrémité de tube (1a) à déformer, avec des faces de compression (4d) de forme semi-circulaire, et qui peuvent être fermées pour effectuer le matriçage à froid de l'extrémité de tube (1a), les faces de compression (4d) présentant un premier contour (4a) pour un guidage des mâchoires de pressage contre un épaulement (2f) du raccord (2), caractérisés en ce que les faces de compression (4d) présentent un deuxième contour (4c) pour le matriçage à froid de l'extrémité de tube (1) dans la région de la bague d'étanchéité (3) et un troisième contour (4b) pour le matriçage à froid de l'extrémité de tube (1) au niveau d'une extrémité libre du raccord (2), le raccord (2) présentant sur son côté extérieur un renfoncement périphérique (2d) correspondant à ce troisième contour (4b).
EP03700282A 2002-01-28 2003-01-21 Assemblage par compression Revoked EP1470356B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1382002 2002-01-28
CH138022002 2002-01-28
PCT/CH2003/000038 WO2003064912A1 (fr) 2002-01-28 2003-01-21 Assemblage par compression

Publications (2)

Publication Number Publication Date
EP1470356A1 EP1470356A1 (fr) 2004-10-27
EP1470356B1 true EP1470356B1 (fr) 2006-05-17

Family

ID=27626677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03700282A Revoked EP1470356B1 (fr) 2002-01-28 2003-01-21 Assemblage par compression

Country Status (5)

Country Link
EP (1) EP1470356B1 (fr)
AT (1) ATE326659T1 (fr)
DE (1) DE50303361D1 (fr)
DK (1) DK1470356T3 (fr)
WO (1) WO2003064912A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024076732A1 (fr) * 2022-10-06 2024-04-11 Reliance Worldwide Corporation Emmanchement à la presse

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1561986A1 (fr) * 2004-02-07 2005-08-10 Roth Werke GmbH Raccord de tuyauterie
DE102005033482A1 (de) * 2005-07-18 2007-01-25 Ipa Produktions- & Vertriebsges. M.B.H. Verbindungsvorrichtung
DE202006010350U1 (de) * 2006-06-30 2007-11-08 Rehau Ag + Co. Fitting-Montagebaugruppe
DE102006034101A1 (de) * 2006-07-20 2008-02-07 VETEC GmbH Verbindungstechnologie für Versorgungssysteme Hülse und Kombination von Hülse mit Presswerkzeug
EP1930640B1 (fr) * 2006-12-06 2010-02-24 Uponor Innovation Ab Raccord pour un tuyau, en particulier un tuyau en plastique ou un tuyau en alliage de plastique et de métal
ES2351635B1 (es) * 2007-08-02 2012-05-25 Bexiflon, S.L. Sistema de conexión entre un tubo de agua y una tetina de una válvula o de otro elemento conector.
EP2136121A1 (fr) 2008-06-09 2009-12-23 Uponor Innovation Ab Pressfitting pour un tuyau, en particulier un tuyau en plastique ou un tuyau en alliage de plastique et de métal
DE202009016975U1 (de) 2009-12-16 2011-04-28 Uponor Innovation Ab Fitting für ein Rohr
DK2691680T3 (en) 2011-03-28 2017-07-17 Flexin Group S R L STUDS TO HOSE
ITBO20110156A1 (it) * 2011-03-28 2011-06-27 Flexin Group Srl Raccordo per tubi flessibili con migliorate caratteristiche di sigillatura
ITBO20110588A1 (it) * 2011-10-18 2012-01-17 Flexin Group Srl Socio Unico Raccordo per tubi flessibili del tipo a singolo pezzo
US20130076024A1 (en) * 2011-09-26 2013-03-28 E I Du Pont De Nemours And Company Hose coupling with a non-swaged portion
AU2017383094A1 (en) * 2016-12-23 2019-06-27 Construkta World Pty Ltd Crimping jaw, tool and associated method of use
DE102018206907A1 (de) * 2018-05-04 2019-11-07 Continental Teves Ag & Co. Ohg Luftfeder mit speziellem Spannring

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10137078B8 (de) * 2001-07-28 2005-04-14 Uponor Innovation Ab Pressfitting für Rohre
DE9016310U1 (de) * 1990-11-30 1991-02-21 Hewing GmbH, 4434 Ochtrup Rohrverbindung, insbesondere an Verbundrohren
AU1307592A (en) * 1991-03-22 1992-09-24 Evan Robert Davies Improvements in or relating to methods of and/or apparatus for forming joints
WO1998005897A1 (fr) * 1996-08-05 1998-02-12 Smb Innovative Produkte Wildau Gmbh Assemblage de tuyaux non liberable
DE19707827C2 (de) * 1997-02-25 1999-04-01 Geberit Technik Ag Pressverbindung
DE29813935U1 (de) 1998-08-04 1998-10-01 Franz Viegener II GmbH & Co. KG, 57439 Attendorn Unlösbare Preßverbindung zwischen einem Fitting und einem Metallrohrende
DE10010573C1 (de) * 2000-03-03 2001-03-01 Unicor Rohrsysteme Gmbh Anschluss-Vorrichtung für ein Rohr

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024076732A1 (fr) * 2022-10-06 2024-04-11 Reliance Worldwide Corporation Emmanchement à la presse

Also Published As

Publication number Publication date
DE50303361D1 (de) 2006-06-22
DK1470356T3 (da) 2006-09-25
ATE326659T1 (de) 2006-06-15
EP1470356A1 (fr) 2004-10-27
WO2003064912A1 (fr) 2003-08-07

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